The belts exceed USA RMA published ratings levels; They are designed to perform at the identical or higher level than all other major USA Manufacturer's belts of the same type
500-P5M-25 Synchronous Timing Belt OEM Part Number 500-P5M-25 Belt Type P5M Timing Belt
Technical Specifications: (Inches) (mm) Outside Circumference 19.69 500 Top Width 0.98 25 Belt Depth 0.14 3.5 Material Neoprene Tooth Profile P5M